Type-writing machine.



W. A. LORENZ. TYPE WRITING MACHINE.

APPLICATION FILED APBH I G, 1909. I

Patented Dec. 3, 1912.-

1,046,205. I ET W. A. LORENZ. TYPE WRITING MACHINE, APPLICATION FILED APR. 16, 1909.

1 046,205. Patented De0.3,1912. I 2 smms s nnm 2.

Tfig 6 J as 3'] 40 41 43 30 42 mm V "r i/- "'A'A Tig' 3 *nnrran s'rl-i rrnsrniran r ori ice,

WILLIAM A. LORENZ, or nan'rronn-oomvncrrcur, nssmnon, BY MESNE As- SIGNMENTS, TO THE NOISELESS TYPEWRITER CQMPANY, 0F MIDDLETOWN,

oonuno'rrour.

Specification of Letters Qatent.

TYPE-WRITING MACHINE.

Patented Dec. 3, 191 2.

Application filed April is, 1909. Serial No. 490,208.

Toall whom, it may concern:

' Be it known that I, WILLIAM A. LORENZ, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Type- WVriting Machines, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to typewriting machines, and one of the objects thereof is to provide new and improved means for arresting in a silent manner the movements of the various operative part's thereof. Another object. is to provide improved mechanism designed to reduce to'a minimum impact or concussion of the moving parts during the operation of the machine.

Other objects will be in part obvious and in part pointed out hereinafter.

The invention accordingly consists in the features of construction, combinations of elements and arrangement of parts which w1ll be exemplified in the construction hereinafter set forth, and the scope of the ap li-v cation of which will be indicated in the ollowing claims.

In the accompanying drawings, wherein is illustrated several of various possible embodiments of my invention, Figure 1 is a vertical, sectional view taken through a portion of the machine, showing a key lever and universal bar with the present invention applied thereto; Fig. 2 is a similar view showing the position of the parts when the key lever is depressed 3 Fig. 3 shows a differ.-

ent embodiment of the stop mechanism; Fig.

4:.is a plan view and Fig. 5 is a side view partly in section showing the stop mechanism adapted to the marginal stop block for arresting the return movement of. the carria'ge; and Fig. 6 is a sectional view upon an enlarged scale showing the stop device applied to a marginal stop block.

Similar reference characters refer to" similar parts throughout the several views of the drawings.

Referring now to the drawings, 1 represents the frame of the machine, 2 a universal bar shaft carrying rocker arms 8', said arms in turn supporting rods 1 whose lower ends are interposed in the support of a universal bar 5. The universal bar inthe present instance is provided with a cushion 6 upon which rests the several key levers, one of which is shown at 7 pivoted upon a bar 8 and held upwardly as by means of. a spring 9.

ed to be connected to the type bar action (not shown) and 11 represents a pad which engages the key levers upon their upwardstroke and arrests them in the position shown in Fig. 1-. I

To the lower part of the universal bar is attached a guide plate 12 provided with an aperture 13 for receiving a post 14 extends ing upwardly from a portion of the frame of the machine indicated at 15, said post being vertically adjustable by means of a screw 10 represents a rod orlirik which is adapt- 7 7 16 tapped tothe frame. After adjustment said post may be secured in position, as by means of the lock nut 17 threaded upon the lower end thereof. The post 14 is provided with a collar 18 and seated u on this collar is a relatively heavy coil spring 20. Uponthis coil spring in the present instance is positioned a collar 21 which supports a -8 lighter coil spring22 whose upper end engages the plate-12 of the universal bar.

In the position of Fig. 1 the parts are resting in their normal position, the coil springs 20 and 22 supporting the universal bar in its upper position. By moving the ing great resistance to the stopping of the parts. During'the closing of the spring 22 no appreciable noise will be made, because that spring strikes no solid obstruction by reason of the fact that "the heavy spring yields slightly, and when the heavier spring 20 is compressed no appreciable noise will be produced because the'dista-nce that spring moves in order to be compressed is so slight that its collapsible effect is silent. The dis tance through which the spring 22 will be compressed will be equal to the aggregate ggf r 1,046,205

Ydistanqel-between thefindividual coils and "manner, The elimination of concussion, of

v 3 the unlver'sal banwill bemolved through a impact between the moving parts insures a space equal to this distance; plus the di's-' silentw .operation' .The construction der 'tance. through which "the, heav er spring scribed ineach, of the aboveembodiment's is f-yields under compression. 7 such that little resistance will be ofi'ered to In the embodiment of the inve'ntionshown. the movement of the movable part I durin. Fig; 3 of the'di'awingsl23 indicates? an ing the greater portion of its moveadjustable screw" threaded in the frame 15-, merit, the arresting operation talzing place sardscrew being adapted tobe held in any 7 only during the latter portion of such o adjustable position byimeans. of a lock nut movement and is effected without the,

I single compressible coil spring 27 is production of noise. As will be obvious placed etween the cupped portion 25 of this (spring construction may be'employedscrew-23 and a'c'up 26 depending from the inany other relation desired in atype-writ universal bar. The coilsof this spring vary ,ing machine,.wherein it is desired to effect a 5 in-cross-sectiomthe, spring being thin, as at noiseless arresting of the parts. 0 28,-andthickeratthe other'end, as at 29'. As many changes c'ouldbe made in the In the present instance the coils are shown above construction and many apparently ,to increase gradually in thickness. If dewidely different embodimentsof this 'invensired, .however,'1thecoils may be all of one tion could be made without departingfrom 3 thickness foraportion of the length of the the scope thereof, itis intended that all mat- 7 spring and then thinner fora greaterlength "ter contained'in the above description or t ereof,"wher'eby the structure willa'pproxishown in the accompanying drawings shall f mate the'light and heavy 'springs,':as shown be interpreted as illustrative and not in a in the embodiment illustrated in Fig. 1; limiting sense. It is also to be understood 25 In the embodiment of the invention i-llusthat the -language used in the following -trated. in Figs. 4, 5 and 6 the double coil claims is intended to cover all of the generic springsare carried in a marginal stop block and specific features of the invention herein 30 which is adjustableupon a marginrack described, and all statements of the scope of -;31 supported upon the carriagez32. 33 reprethe invention which, as a matter of lange sents the center tie of the machine and 34 guage might be said to fall therebetween.

.representsthemarginal lever which can be ,Having described my invention, what I shifted outwardly for overwriting through claim as new an desire-to secure by Letters suitable connection operable at the key; Patent is: "board. 1. Ina typewriting machine, the co1n- Referring to Fig.6 themarginal block 30 bination with a universal bar and the key 'isshown in section carrying a slide 35 havlevers which rest thereon, of means for inga head 36 and thestop pin 37 which engradually and silently arresting the downgages the en 38' of a slot 40' inthe block ward movement of the key levers without 30 and which limits the outward movement impact or concussion, comprising a fixed ;4 'f theslide."fAlightcOil spring 41 and a support, a post mounted thereon and pro- "heavier coilspring 42 v are, inserted in the jecting into said universal bar, and a spring block behindthesslide-35, and act to presscoiled about said postiand interposed besaid slide outwardly-as shown. A collar 43 tween the universal bar and said fixed supmaybeinterposed between the two springs port. a

45- and a similarcollar44 may be employed at 2. Inla typewriting machine, the com- 1 the end of spring against which anadjust-f bination with auniversal bar and the key able screw 45 may bear, said screw being levers co-acting therewith, of means for L adapted-for varying the endwise position of gradually and silently arresting "the move. the collar .44 thus adjusting the-tension of 'mento-f said parts without impact or con- 5Q thespringslln the operation of'th-iseme cussion, comprising afixed support, a post bodiment of: the invention, whenever the mountedlthereon and projecting into said carriageireturns the'slide head 36willstrike bar I when depressed, ,and, spring means the margin lever '34, compressing springs coiled abontzsaid post and interposed be- 41' and 42 agiunst'the collar 44. The first tween the universal barand said support.

:55 part of'the fcom'pressing movement willlbe 3. In a typew'riting machine, the comto return of'the-carrlageis cushioned and the cussion, comprisinga fixed support, a post easily effected owing, to the light tensionali bination with a universal bar and the key strength of. the spring 41 and the lastpa t levers co-acting' therewith, of means" for thereof "will beresisted by means Qf the gradually and silently arres-ing the moveheavierTcoil spring 42. In this mannerthe ment of said parts without impact or conshock'of the parts graduallyredllc d mounted thereonand projecting into said It will accordingly be seen that I have bar when depressed,;and spring means som provided a construction well adapted to atprising a plurality of'parts of varying cross -f tam among others all the' ends and objects sectional area interposed between the uni-, 65' above pointed'out in asimple yet efficient t versal bar and said fixed support.

, 4. In a *typewriting' machine,

bination with a universal bar and the key levers co-acting therewith, of means for gradually andsilently arresting the movement ofsaid parts without impact or concussion, comprising'a 'fixed support, a post mounted ,thereon and projecting into said bar when, depressed, spring means coiled about said post'and interposed between the universal bar and said support, and means for changing the said movable part.

5. In a typewriting machine, the combination with a universal bar and the keylevers. co-actingjtherewith, of means for gradually and silently arresting the movement of said parts without impact or concussion, comprising a'fixed support. a post mounted thereon and projecting into said bar when depressed, spring means coiled about said, post and interposed between'the' universal bar and said support, means for changing'therelatlve position of said spring l bination with a universal bar and a fixedv gradually and silently; arresting the movement. of'said universal 2 through which said Copies of this patent may be to .alter the path. of travel of said movable art, said post being threadedly connected with said fixed part, and means whereby the same may be turned to change the relative position of said spring means. I ,.6. In a typewriting machine, the comsupport,jof means for bar without impact or concussion compr sing a post secured toone of said parts, .the other of said parts having an opening post is adapted to pass u when the universal bar is actuated, and

spring means as"soc1ated with said post be mterposed between the uni adapted to versal bar and said fixed support.

7 In 'a typewriting machine, the combination with a universal bar and a fixed support, of means for gradually and silently arresting the movement of said universal the comrelative position of said. spring means to alter the path of travel of other of said parts bar without impact or concussioncomprising a post secured-to one of said parts, the other of said parts through which said when the universal; means associated with said post a 0st is adapted to pass ai is actuated, sprlng having an opening dapted to be interposed between the universal bar and said fixed support, and means changing the relative pos'tion of said spring means. f Y

8. In a binationv with a universal bar and a arresting the movement of said'uniyersal bar withoutimpact or concussion comprisfor 'typewriting machine, the comfixed support, of means for gradually and silently ing a post secured to one of said parts, the.

, having an opening through which said post is adapted topass when the universal bar is actuated, and springmeans having one end of larger crosssectional area than thel other coiled about .said post and interposed versal bar andsaid fixed support. 9. In a typewriting machine, bination with a universal bar and a fixed bar without impact or concussion comprising a post secured to one of said parts, the other of said parts having an opening through which said cross sectional and interposed between the universal bar and said fixed support, and means for changing the relative position of said spring means.

In testimony whereof I affix my signature,

in the presence of two" witnesses.

' -W1LLIAM A. LORENZ.

Vit'nesses EDWARD H. LORENZ, Niumm PHQEN'Ix.

obtained for five cents each. by addressing the Commissioner of Patents,

Washington, D. C.

between, the 'unithe comsupport, of means for graduallyand silently arresting the movement of sad universal.

'75 post is adapted to pass when the universal bar is actuated, a spring means composed of two parts of diiierent area coiled about said post- 

